Question

For brett's birthday his mother gave out colorful birthday hats that were cone shaped. the opening of the bottom of the hat was 3 cm and the height of the cone was 7 cm. brett filled his hat with candy. what is the approximate volume of candy?

Answer 1

The volume of cone is calculated by the formula $V= \frac{1}{3} \pi R^2H$, where H is a height of cone and R is a radius of the bottom.
In your case, R=3 cm and R=7 cm. Then $V= \frac{1}{3} \pi* 3^2*7= \frac{63\pi}{3} =21\pi$.
Answer: The volume of candy is 21π.